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Old 17th June 2004, 01:06 PM   #1
BillyF is offline BillyF  Singapore
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Default KBA-75 Help

Hi,
I need some help from all the Gurus in the forum.
I have this Kinergetics Research KBA-75 Power Amp and there is a slight hum coming out from my speakers (both channel).
Could this be from the power supply?
And when I powered-off, a thug sound can be heared from right to left speaker.
How would I check if both channel were equally biased?
Please advise.
Thanks,
Billy
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Old 17th June 2004, 02:01 PM   #2
jmateus is offline jmateus  United States
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Default amplifier problem

Yes, most definitly must be the power supply.
You should check it/replace the smoothing capacitors. Also
the ground scheme must be checked.
Good luck
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Old 18th June 2004, 01:38 AM   #3
BillyF is offline BillyF  Singapore
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Hi jm,
Thanks for your advise.
The smoothing cap you mentioned, are you refering to the bypass caps in thepower supply usually connected parallel with the main filter caps?
How a bout the Thug sound after power-off?
Thanks again,
Billy
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